US Bridges

C409 Diamond Cp RD over Kiger Creek

Fair

Harney County, Oregon · 078 M OR205 Frenchglen Hy · Structure no. 24061C040900789

Built
2021
4 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
148
2020 count
Owner
County
County Highway Agency

About this bridge

C409 Diamond Cp RD over Kiger Creek is a steel stringer/multi-beam or girder carrying C409 Diamond Cp RD over Kiger Creek in Harney County, Oregon. It was built in 2021, so it is 4 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 148 vehicles a day, roughly 10% of them trucks, projected to reach 163 by 2025. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 47.8 mi (77 km).

Location

Open in Google Maps
CarriesC409 Diamond Cp RD
CrossesKiger Creek
Location078 M OR205 Frenchglen Hy
RouteCounty Highway C0409
CountyHarney County
StateOregon
Coordinates43.02677, -118.73061
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.8 US tons
Inventory rating22.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckSteel plate
Main spans1
Design loadHL 93
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic148 (2020)
Projected traffic163 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.8 mi (77 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was C409 Diamond Cp RD over Kiger Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is C409 Diamond Cp RD over Kiger Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does C409 Diamond Cp RD over Kiger Creek carry?

About 148 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is C409 Diamond Cp RD over Kiger Creek?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns C409 Diamond Cp RD over Kiger Creek?

It is owned by the County Highway Agency.